Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors in Nova Petropolis, Brazil, where the Cfa climate offers beautiful weather but also presents significant solar exposure risks. By keeping an eye on UV levels, individuals can take proactive steps to prevent sunburn and protect their skin health, especially during peak hours when the index reaches its highest at 12 PM, with a level of 5. From late morning to early afternoon, the risk is more pronounced, making awareness vital for enjoying the sun safely while appreciating the scenic beauty of this charming city.
As the sun rises, the UV Index begins at 0 at 7:00 AM, offering a safe start to the day. By 8:00 AM, it climbs to 1, indicating minimal risk for most people. As the morning progresses, the UV Index reaches 3 by 10:00 AM, signaling a moderate level that advises some sun protection if you're outdoors. The peak intensity occurs at 12:00 PM with a reading of 5, which translates to a higher risk of harm from unprotected sun exposure. Fortunately, the UV levels gradually decrease throughout the afternoon, dropping to 3 at 2:00 PM and further down to 1 by 4:00 PM. As evening falls, the index diminishes to 0 by 6:00 PM, bringing relief from the sun's rays. Overall, it’s a day to enjoy the sun safely, with peak caution needed during the midday hours.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 5 | moderate | 30 min |
| 13:00 | 4 | moderate | 30 min |
| 14:00 | 3 | moderate | 30 min |
| 15:00 | 2 | low | 45 min |
| 16:00 | 1 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index exhibits significant seasonal variation, with January, February, March, October, November, and December classified as high-risk months, all featuring an extreme exposure category and a quick burn time of just 10 minutes. Similarly, April and September fall into the very high category with burn times of 15 minutes. In contrast, May and August have a high exposure category with longer burn times of 25 minutes, while June and July offer a moderate risk, allowing for 30 minutes before burning. Residents and visitors should take serious precautions during the extreme months by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen frequently to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nova Petropolis | 14 | 13 | 12 | 10 | 6 | 5 | 5 | 7 | 9 | 12 | 13 | 14 |
| Rio de Janeiro UVI | 15 | 14 | 13 | 10 | 7 | 6 | 7 | 9 | 11 | 12 | 13 | 15 |
| Sao Paulo UVI | 16 | 15 | 12 | 11 | 8 | 6 | 7 | 9 | 11 | 13 | 14 | 15 |
| Belo Horizonte UVI | 17 | 16 | 14 | 12 | 9 | 7 | 8 | 10 | 12 | 13 | 14 | 16 |
| Salvador UVI | 14 | 14 | 14 | 13 | 10 | 9 | 9 | 12 | 12 | 15 | 15 | 14 |
| Fortaleza UVI | 14 | 14 | 15 | 15 | 13 | 11 | 11 | 12 | 13 | 13 | 13 | 13 |